Is there a way to have the PM inbox have its conversations be unique to the participants?

In other words, I don't want the same user to be able to start 45 different conversations with me. It should always be the same conversation between the two of us.

This is historically how all forum software I've interacted with operates and I find it preferable to the many conversations between the same users.

Thanks in advance!

Edited December 8, 20204 yr by Hypervisor

46 minutes ago, Hypervisor said:

In other words, I don't want the same user to be able to start 45 different conversations with me. It should always be the same conversation between the two of us.

Unfortunately, there are no out of the box settings to modify this behavior. You'd need to create an extension to get this desired functionality.